Optical fiber adapter

Abstract

The utility model relates to the technical field of adapters, and specifically discloses an optical fiber adapter comprising a housing, an inner core and a sliding driving mechanism, the housing comprises a large-size end and a small-size end, the large-size end is configured to be detachably connected with a second connector, a first channel is arranged in the housing, the inner core slidably abuts against the first channel of the housing, and the small-size end is configured to be detachably connected with the second connector. A second channel is formed in the inner core, the second channel is a signal connection channel of the second connector and the first connector, the inner core is configured to be detachably connected with the first connector, and the sliding driving mechanisms have the tendency of driving the inner core to slide towards the position away from the small-size end. Compared with the prior art, the optical path connector has the advantages that the structural size is reduced, the cost is reduced, the optical path connector can automatically adapt to stable contact between different compatible Optitap connectors and a connector conforming to the IEC standard, and the problems of optical path connection failure and signal jitter caused by the difference of the distances between the insertion core end surfaces of the different compatible Optitap connectors and the nut locking binding surface are solved.

Description

Technical Field

[0001] This utility model relates to the field of adapter technology, specifically to an optical fiber adapter. Background Technology

[0002] There are numerous Optitap compatible connectors and adapters from various manufacturers on the market. Existing adapters have an outer diameter of 30mm, and the distance from the connector ferrule end face to the nut locking mating surface varies significantly between manufacturers, leading to the following issues:

[0003] 1. Due to the large 30mm mounting hole spacing of this adapter, the cost of a single adapter is high. At the same time, because the size of a single adapter is large, and the matching cabinet will house multiple adapters, the size of the matching cabinet will increase significantly, and the cost will also increase greatly.

[0004] 2. The distance from the end face of the ferrule to the locking surface of the nut varies significantly among different manufacturers of compatible Optitap connectors. When these connectors are mated with the IEC standard-compliant connectors on the other end, the spring force of the two ferrules may be insufficient or they may not make effective contact, resulting in increased signal attenuation or link failure. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this invention is to provide a fiber optic adapter that has a smaller installation size and adapts to different distances between the end face of the ferrule and the locking surface of the nut. This ensures that the two ferrules of compatible Optitap connectors from various manufacturers and IEC standard-compliant connectors can be adaptively adjusted within the adapter, always ensuring an effective link connection.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] An optical fiber adapter, comprising:

[0008] The housing includes a large end and a small end opposite the large end, the large end being configured to be detachably connected to a second connector, and the housing having a first channel inside;

[0009] The inner core slides against the first channel of the outer shell, and the interior of the inner core has a second channel, which is a signal connection channel between the second connector and the first connector. The inner core is configured to be detachably connected to the first connector.

[0010] One or more sliding drive mechanisms have a tendency to drive the inner core to slide away from the smaller end.

[0011] Furthermore, the housing includes at least one of the following:

[0012] A first internal thread is provided inside the large-size end, and the first internal thread is configured to be threadedly connected to a second external thread of the housing of the second connector;

[0013] The first external thread is located on the outside of the small-sized end, and the fiber optic adapter is fixed to the housing through the first external thread.

[0014] Furthermore, the sliding drive mechanism is of type one or type two, wherein,

[0015] When the sliding drive mechanism is of type one, the sliding drive mechanism includes an elastic element, the inner shell has a first abutting part, and the inner core has a second abutting part; one end of the elastic element abuts against the first abutting part of the outer shell, and the other end abuts against the second abutting part of the inner core; the extension and retraction direction of the elastic element is parallel to the axial direction of the first channel;

[0016] When the sliding drive mechanism is of type two, the sliding drive mechanism is a magnetic element, the magnetic element includes a first magnet and a second magnet, the first magnet is disposed inside the outer shell, the second magnet is disposed on the inner core, the first magnetic pole on the first magnet and the second magnetic pole on the second magnet are disposed opposite to each other, the first magnetic pole and the second magnetic pole have the same polarity, and the first magnetic pole and the second magnetic pole repel each other in the direction parallel to the axial direction of the first channel.

[0017] Furthermore, a limiting structure is provided within the first channel of the outer shell to restrict the sliding travel of the inner core.

[0018] The limiting structure includes an initial limiting part located at the initial position of the sliding stroke and an extreme limiting part located at the extreme position of the sliding stroke.

[0019] Furthermore, the second abutting portion of the inner core abuts against the initial limiting portion in the initial position and against the ultimate limiting portion in the extreme position.

[0020] Furthermore, an initial limiting part is provided in the first channel of the outer shell, and an anti-detachment part is provided on the inner core. The initial limiting part is configured to restrict the anti-detachment part from sliding in the first channel at an initial position, which is the position where the initial limiting part and the anti-detachment part abut against each other.

[0021] The outer shell has a limit limiting part in the first channel. The limit limiting part is configured to limit the second abutting part of the inner core from compressing the elastic element under the action of external force and thus sliding in the first channel to the limit position. The limit position is the position where the limit limiting part and the second abutting part abut against each other.

[0022] Furthermore, a first sliding groove is provided in the first channel, the initial limiting part is provided in the first sliding groove, the channel of the first sliding groove extends at least from the initial limiting part to the small size end, and the anti-detachment part is slidably connected to the first sliding groove.

[0023] Furthermore, either or both of the first abutment portion of the outer shell and / or the second abutment portion of the inner core have a receiving space, and the elastic element is partially and / or entirely received within the receiving space; and / or,

[0024] A guide post is provided for either or both of the first abutting portion of the outer shell and / or the second abutting portion of the inner core, and the elastic element partially and / or entirely penetrates the guide post.

[0025] Furthermore, the port of the accommodating space away from the first abutment portion of the outer shell is provided with a first chamfer, the first chamfer being used to assist in the introduction of the elastic element.

[0026] Furthermore, the port of the first chamfer extends circumferentially along the first channel to form the limit limiting portion.

[0027] Furthermore, a second sliding groove is provided in the first channel or on the inner core, the limit limiting part is located at one end of the channel of the second sliding groove, the channel of the second sliding groove extends from the limit limiting part to the larger size end, and the second abutting part of the inner core is slidably connected to the second sliding groove.

[0028] Furthermore, a second chamfer is formed at the end of the second sliding groove away from the limit stop portion, and the second chamfer is used to assist in the introduction of the inner core.

[0029] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0030] 1. The floating inner core design can adapt to different distances between the ferrule end face and the nut locking mating surface of compatible Optitap connectors, ensuring that the ferrules of compatible Optitap connectors from various manufacturers and IEC standard compliant connectors can be adaptively adjusted in the adapter to always ensure an effective link connection.

[0031] 2. The adapter can be detachably connected to the housing through a small-sized end. Compared with the adapters of the prior art that are detachably connected to the housing through the middle of a large-sized shell, this avoids the need for a larger second connector, thereby reducing the size of the adapter and lowering the cost of the adapter and the matching housing. Attached Figure Description

[0032] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0033] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0034] Figure 2 This is an exploded view of the overall structure of this utility model;

[0035] Figure 3 This is a full sectional view of the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of the outer shell of this utility model;

[0037] Figure 5 This is a structural schematic diagram of the outer shell of this utility model from another angle;

[0038] Figure 6 This is a schematic diagram of the inner core of this utility model;

[0039] Figure 7 This is a structural schematic diagram of the inner core of this utility model from another angle;

[0040] Figure 8 This is a cross-sectional view of the inner core of this utility model installed in the outer shell;

[0041] Figure 9 This is a cross-sectional view of the fiber optic adapter of this utility model when connected to the first connector;

[0042] Figure 10 This is a cross-sectional view of the fiber optic adapter of this utility model when connected to the first connector and the second connector.

[0043] Among them, 100, fiber optic adapter; 1, nut; 2, sealing gasket; 3, housing; 31, small-size end; 32, large-size end; 33, first channel; 34, first internal thread; 35, first port; 36, second port; 37, first external thread; 38, accommodating space; 39, first abutment part; 310, first chamfer; 311, second sliding groove; 312, second chamfer; 313, first sliding groove; 314, limit limiting part; 315, initial limiting part; 31501, second tilt. 4. Sliding drive mechanism; 41. Elastic element; 5. Inner core; 51. Second abutment part; 52. Anti-detachment part; 5201. First inclined surface; 53. Second channel; 54. Claw; 6. Sleeve; 7. Connecting rope; 71. Connecting ring; 8. Dust cap; 9. Sealing ring; 10. First connector; 101. First spring; 102. First ferrule; 103. First connector housing; 11. Second connector; 111. Second spring; 112. Second ferrule; 113. Second connector housing. Detailed Implementation

[0044] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0045] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0046] Example 1

[0047] This embodiment provides a fiber optic adapter 100, such as Figure 10As shown, a first connector 10 and a second connector 11 are used to connect the first connector 10 and the second connector 11. The first connector 10 is a connector conforming to the IEC standard, and the second connector 11 is an Optitap compatible connector from various manufacturers. The external dimensions of the first connector 10 are generally smaller than those of the second connector 11. The first connector 10 includes a first spring 101, a first ferrule 102, and a first connector housing 103. The first spring 101 tends to drive the first ferrule 102 to extend out of the first connector housing 103 along the ferrule axis. The second connector 11 includes a second spring 111, a second ferrule 112, and a second connector housing 113. The second spring 111 tends to drive the second ferrule 112 to extend out of the second connector housing 113 along the ferrule axis. The fiber optic adapter 100 provided in this embodiment specifically achieves an effective connection between the first ferrule 102 of the first connector 10 and the second ferrule 112 of the second connector 11.

[0048] In addition, the fiber optic adapter 100 provided in this embodiment can also be installed on the enclosure. By configuring multiple fiber optic adapters 100 on the enclosure, the effective transmission of multiple optical paths can be achieved.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, the fiber optic adapter 100 provided in this embodiment includes a housing 3, an inner core 5, and one or more sliding drive mechanisms 4.

[0050] like Figure 4 and Figure 5 As shown, the two ends of the housing 3 have a size difference, namely, a large end 32 and a small end 31. The large end 32 is configured to be detachably connected to the second connector 11. The housing 3 has a first channel 33 inside. The end of the large end 32 that communicates with the outside is a second port 36 for the second connector 11 to be inserted into; the end of the small end 31 that communicates with the outside is a first port 35 for the first connector 10 to be inserted into.

[0051] The inner core 5 slides against the first channel 33 of the outer shell 3, as follows: Figure 7 As shown, the inner core 5 has a second channel 53 inside. The inner core 5 is configured to be detachably connected to the first connector 10. The second channel 53 is a signal connection channel between the second connector 11 and the first connector 10. Specifically, the second channel 53 allows the first ferrule 102 of the first connector 10 and the second ferrule 112 of the second connector 11 to be inserted, thereby enabling the first ferrule 102 and the second ferrule 112 to be effectively connected.

[0052] The sliding drive mechanism 4 has a tendency to drive the inner core 5 to slide away from the small-sized end 31.

[0053] This embodiment provides a fiber optic adapter 100 with a size difference between its two ends of the housing 3. Since the first connector 10 is typically smaller than the second connector 11, the first connector 10 is inserted through the first port 35 of the smaller end 31, while the second connector 11 is inserted through the second port 36 of the larger end 32. Compared to existing large-size adapters compatible with Optitap connectors, the adapter provided by this invention significantly reduces size, saving costs. Furthermore, the radial dimension of the smaller end 31 is more closely matched to the size of the first connector 10 due to the size difference between the two ends of the housing 3. Additionally, as the size of the fiber optic adapter 100 decreases, the size of the corresponding housing also decreases accordingly, greatly reducing costs.

[0054] This embodiment provides an optical fiber adapter 100. By setting a sliding drive mechanism 4 that has a tendency to drive the inner core 5 to slide away from the small-size end, when an external force is applied to the second connector 11 located at the large-size end 32 to connect with the first connector 10 located at the small-size end 31, the second connector 11 applies pressure to the inner core 5. After this pressure is transmitted to the sliding drive mechanism 4, the sliding drive mechanism 4 applies a reaction force to the inner core 5. The pressure applied by the second connector 11 to the inner core 5 and the reaction force applied by the sliding drive mechanism 4 to the inner core 5 interact, making the second ferrule 112 of the second connector 11 and the first ferrule 102 of the first connector 10 closer together in the second channel 53 of the inner core 5, thereby ensuring that the first ferrule 102 of the first connector 10 and the second ferrule 112 of the second connector 11 are effectively connected in the second channel 53 of the inner core 5.

[0055] Additionally, for compatible Optitap connectors from different manufacturers, the distance from the ferrule end face to the nut locking mating surface may vary (e.g., the distance from the ferrule end face to the nut locking mating surface is...). Figure 10 As shown in L), the smaller the distance, the less pressure the second connector 11 exerts on the inner core 5. After this pressure is transmitted to the sliding drive mechanism 4, the smaller the reaction force the sliding drive mechanism 4 exerts on the inner core 5, and the shorter the floating length of the inner core 5. Conversely, the larger the distance, the greater the pressure the second connector 11 exerts on the inner core 5. After this pressure is transmitted to the sliding drive mechanism 4, the greater the reaction force the sliding drive mechanism 4 exerts on the inner core 5, and the longer the floating length of the inner core 5. This ensures that the two cores of the Optitap connector and the IEC standard connector are adaptively adjusted in the adapter, always ensuring an effective link connection.

[0056] In this embodiment, the large-size end 32 and the second connector 11 can be connected by threads, snap-fit, etc., as long as the large-size end 32 and the second connector 11 can be detachably connected. This embodiment does not limit this.

[0057] In one specific implementation of this embodiment, such as Figure 5As shown, the large-size end 32 has a first internal thread 34 inside the first channel 33. The first internal thread 34 is configured to be threadedly connected to the second external thread on the second connector 11. Specifically, the first internal thread 34 is configured to be threadedly connected to the second external thread on the second connector housing 113. In order to ensure stable contact between the first ferrule 102 and the second ferrule 112, the axial length of the first internal thread 34 in the housing 3 is greater than the axial length of the second external thread on the second connector 11.

[0058] In this embodiment, the inner core 5 and the first connector 10 can be connected by threads, snap-fit, etc., as long as the inner core 5 and the first connector 10 can be detachably connected. This embodiment does not limit this.

[0059] like Figure 6 As shown, two claws 54 are symmetrically arranged in the inner core 5 for fixing the first connector 10. Specifically, the claws 54 have a certain degree of elasticity and are adapted to engage with the slots on the outside of the first connector housing 103, thereby realizing the connection between the inner core 5 and the first connector 10.

[0060] In this embodiment, when the fiber optic adapter 100 needs to be detachably connected to the housing, the small end 31 and the housing can be connected by threads, snap-fit, etc., as long as the small end 31 can be detachably connected to the housing. This embodiment does not limit this.

[0061] In one specific implementation of this embodiment, such as Figure 4 As shown, the small-sized end 31 has a first external thread 37, which is configured to be fixed to the mounting hole on the housing by a nut 1 and a sealing gasket 2. The housing 3 is fitted with a sealing gasket 2 and a nut 1 at the end of the first external thread 37 to fix and seal the small-sized end 31.

[0062] In this embodiment, as Figure 2 As shown, the sliding drive mechanism 4 includes an elastic element 41. In this embodiment, the elastic element 41 can be a spring. In other feasible embodiments, the elastic element 41 can also be a rubber block, etc.

[0063] In this embodiment, as Figures 5-8 As shown, the first channel 33 has a first abutting part 39 inside, and the inner core 5 has a second abutting part 51. The first abutting part 39 abuts against one end of the elastic element 41, and the second abutting part 51 abuts against the other end of the elastic element 41. The extension and retraction direction of the elastic element 41 is parallel to the axial direction of the first channel 33. The elastic element 41 of this utility model has the tendency to drive the inner core 5 to slide away from the small-sized end 31.

[0064] In this embodiment, a limiting structure is provided in the first channel 33 of the outer shell 3 to limit the sliding stroke of the inner core 5. The limiting structure includes an initial limiting part 315 located at the initial position of the sliding stroke and an extreme limiting part 314 located at the extreme position of the sliding stroke. The initial limiting part 315 limits the inner core 5 to the initial position and the extreme position of the sliding stroke, so that the inner core 5 slides from the initial position to the extreme position under the indirect action of the external force applied to the second connector 11. When the nut of the second connector 11 is fully locked and the resultant force on the inner core 5 reaches equilibrium, the inner core 5 stops sliding, which is adapted to the different distances from the end face of the ferrule to the locking mating surface of the nut of various compatible Optitap connectors.

[0065] An initial limiting part 315 is provided in the first channel 33 of the outer shell 3, and an anti-detachment part 52 is provided on the inner core 5. The initial limiting part 315 is configured to restrict the anti-detachment part 52 from sliding in the first channel 33 at an initial position, which is the position where the initial limiting part 315 and the anti-detachment part 52 abut against each other.

[0066] The first channel 33 of the outer shell 3 is provided with a limit limiting part 314. The limit limiting part 314 is configured to limit the second abutting part 51 of the inner core 5 to the limit position where it compresses the elastic element 41 under the action of external force and then slides in the first channel 33. The limit position is the position where the limit limiting part 314 and the second abutting part 51 abut against each other.

[0067] like Figure 5 As shown, either or both of the first abutting portion 39 of the outer casing 3 and the second abutting portion 51 of the inner core 5 have a receiving space 38, and the elastic element 41 is partially and / or entirely received in the receiving space 38; and / or,

[0068] The first abutting portion 39 of the outer shell 3 and / or the second abutting portion 51 of the inner core 5, or both, are provided with guide posts, and the elastic element 41 partially and / or completely penetrates the guide posts.

[0069] In this embodiment, as Figure 5 As shown, the accommodating space 38 is a circular blind hole for accommodating the spring, and the first abutting part 39 is provided in the accommodating space 38, specifically the inner bottom wall of the circular blind hole. The inner core 5 has a second abutting part 51 that abuts against the other end of the elastic element 41, and the extension and retraction direction of the elastic element 41 is parallel to the axial direction of the first channel 33.

[0070] The port of the receiving space 38 away from the outer shell 3 and the abutting part of the abutting elastic element 41 is provided with a first chamfer 310, which is used to assist in the introduction of the elastic element 41.

[0071] like Figure 5As shown, the port of the first chamfer 310 extends circumferentially along the first channel 33 to form a limit limiting part 314. The limit limiting part 314 is configured to limit the sliding of the second abutting part 51 within the first channel 33 to a limit position, which is the position where the limit limiting part 314 and the second abutting part 51 abut against each other.

[0072] In one feasible embodiment, the second abutting portion 51 is a grooved surface. When the limit limiting portion 314 abuts against the second abutting portion 51, the elastic element 41 is not completely compressed into the accommodating space 38 (circular blind hole), that is, the accommodating space 38 is used to accommodate part of the elastic element 41. In another feasible embodiment, the second abutting portion 51 is a plane. When the limit limiting portion 314 abuts against the second abutting portion 51, the elastic element 41 is completely compressed into the accommodating space 38 (circular blind hole), that is, the accommodating space 38 is used to accommodate all of the elastic element 41.

[0073] like Figure 5 , Figure 6 and Figure 8 As shown, an initial limiting part 315 is provided on the inner wall of the first channel 33, and an anti-detachment part 52 is provided on the outer wall of the inner core 5. Both the initial limiting part 315 and the anti-detachment part 52 are wedge-shaped. The anti-detachment part 52 is provided with a first inclined surface 5201, and the initial limiting part 315 is provided with a second inclined surface 31501 that matches the first inclined surface 5201. Both the initial limiting part 315 and the anti-detachment part 52 have a certain degree of elasticity. The initial limiting part 315 is configured to restrict the anti-detachment part 52 from sliding in the first channel 33 to an initial position, which is the position where the initial limiting part 315 and the anti-detachment part 52 abut against each other.

[0074] Furthermore, such as Figure 5 As shown, a first sliding groove 313 is provided in the first channel 33, and an initial limiting part 315 is provided in the first sliding groove 313. The channel of the first sliding groove 313 extends at least from the initial limiting part 315 to the small-size end 31. The anti-detachment part 52 is slidably connected to the first sliding groove 313. The number of anti-detachment parts 52 and the number of first sliding grooves 313 are the same, and there are one or more of them. When the number of anti-detachment parts 52 and the number of first sliding grooves 313 are the same, and there are multiple anti-detachment parts 52, the sizes of the multiple anti-detachment parts 52 are the same or different, and the sizes of the multiple second sliding grooves 313 are the same or different. The shape of each second sliding groove 313 matches the shape of one anti-detachment part 52.

[0075] In this embodiment, as Figure 5 and Figure 6As shown, there are two anti-detachment parts 52 and two second sliding grooves 313. The two anti-detachment parts 52 are symmetrically arranged on both sides of the inner core 5 and their sizes are different. The shape of each second sliding groove 313 matches the shape of the corresponding anti-detachment part 52, which plays a role in preventing mistake and preventing the inner core 5 from being installed backwards.

[0076] In this embodiment, the accommodating space 38 guides the expansion and contraction of the elastic element 41. In another feasible embodiment, a guide post can be provided in either or both of the first abutting part 39 or the second abutting part 51. The guide post partially or completely penetrates the elastic element 41 and guides the expansion and contraction of the elastic element 41.

[0077] In one feasible embodiment, the guide post is fixedly disposed on the first abutment portion 39, and the length of the guide post is less than the depth of the accommodating space 38 (circular blind hole). When the elastic element 41 is compressed to the limit limiting portion 314, the guide post partially penetrates the elastic element 41. In another feasible embodiment, the guide post is fixedly disposed on the first abutment portion 39, and the length of the guide post is equal to the depth of the accommodating space 38 (circular blind hole). When the elastic element 41 is compressed to the limit limiting portion 314, the guide post completely penetrates the elastic element 41. In this embodiment, the accommodating space 38 or the guide post can be provided separately.

[0078] In this embodiment, the port of the first chamfer 310 extends circumferentially along the first channel 33 to form a limit limiting part 314. The limit limiting part 314 is configured to limit the sliding position of the second abutting part 51 within the first channel 33. The limit position is the position where the limit limiting part 314 and the second abutting part 51 abut against each other.

[0079] Furthermore, such as Figure 5 As shown, a second sliding groove 311 is provided in the first channel 33, and a limit limiting part 314 is located at one end of the channel of the second sliding groove 311. The channel of the second sliding groove 311 extends from the limit limiting part 314 to the large size end 32, and the second abutting part 51 of the inner core 5 is slidably connected to the second sliding groove 311.

[0080] The number of second abutment portions 51 and second sliding grooves 311 is the same, and each has one or more. When the number of second abutment portions 51 and second sliding grooves 311 is the same, and each has multiple, the sizes of the multiple second abutment portions 51 are the same or different, and the sizes of the multiple second sliding grooves 311 are the same or different, and the shape of each second sliding groove 311 matches the shape of a second abutment portion 51.

[0081] In this embodiment, as Figure 5 and Figure 7As shown, there are two second abutment parts 51 and two second sliding grooves 311. The two second abutment parts 51 are symmetrically arranged on both sides of the inner core 5 and their sizes are different. The second abutment parts 51 are in the shape of a boss. The shape of each second sliding groove 311 matches the shape of the corresponding second abutment part 51, which plays a role in preventing mistake and preventing the inner core 5 from being installed backwards.

[0082] Furthermore, such as Figure 5 As shown, a second chamfer 312 is formed at one end of the second sliding groove 311 away from the limit limiting part 314. The second chamfer 312 is used to assist in the introduction of the inner core 5.

[0083] In this embodiment, as Figure 2 , Figure 3 and Figure 7 As shown, a sleeve 6 is fixedly provided in the second channel 53 of the inner core 5 along its own axis for the first ferrule 102 of the first connector 10 and the second ferrule 112 of the second connector 11 to be inserted. The sleeve 6 is used to improve the accuracy of the ferrule mating and can usually be a ceramic sleeve.

[0084] In this specific embodiment, the assembly process of the outer shell 3 and the inner core 5 is as follows:

[0085] The inner core 5 is inserted into the second port 36 of the outer shell 3. The second chamfer 312 assists in guiding the inner core 5 inward. During the process of the inner core 5 sliding into the outer shell 3, the first inclined surface 5201 and the second inclined surface 31501 slide together. Figure 8 The arrows in the diagram indicate the sliding direction of the inner core 5 during installation. When the inner core 5 is installed in place in the outer casing 3, the initial limiting part 315 and the anti-detachment part 52 abut against each other to prevent the inner core 5 from coming out of the outer casing 3. At this time, the elastic element 41 is in a natural state or a slightly compressed state, and its length is the installation length.

[0086] The method for connecting the first ferrule 102 of the first connector 10 and the second ferrule 112 of the second connector 11 using the fiber optic adapter 100 provided in this specific embodiment is as follows:

[0087] The fiber optic adapter 100 is connected to the mounting housing via the first external thread 37 of the housing 3, and the first connector 11 is inserted from the first port 35 of the housing 3. During this process, as... Figure 9 As shown, the first spring 101 of the first connector 10 is compressed, and the first ferrule 102 overcomes the friction of the sleeve 6 when it is inserted into the sleeve 6, until the claw 54 in the inner core 5 is engaged in the slot outside the first connector 10, thereby locking the first connector 10 with the fiber optic adapter 100.

[0088] Subsequently, the second connector 11 is inserted into the second port 36 of the housing 3. The second spring 111 of the second connector 11 is compressed, and the second ferrule 112 overcomes the friction of the sleeve 6 and moves towards the smaller end 31 until the second ferrule 112 of the second connector 11 touches the first ferrule 102 of the first connector 10. At this time, there is still a distance S between the locking mating surface of the external thread of the second connector 11 and the end face of the fiber optic adapter 100. Figure 10 As shown. Then, the second connector 11 is tightened relative to the outer shell 3. The second connector 11 will exert a certain pressure on the inner core 5. This pressure will drive both the inner core 5 and the second connector 11 to slide towards the smaller end 31, reducing the S distance to 0. At this time, the second ferrule 112 and the first ferrule 102 can make stable contact, and the signal can be effectively transmitted between the link formed by the second ferrule 112 and the first ferrule 102. In addition, the introduction of the elastic element 41 makes the inner core 5 float, which enables the ferrules of compatible Optitap connectors with different distances from the ferrule end face to the nut locking mating surface to adaptively adjust with the ferrules of IEC standard connectors in this embodiment's adapter, completing the docking of the two ferrules and always ensuring the link is effective.

[0089] In this embodiment, the compressed length of the elastic element 41 is 1-4mm, the reaction force of the elastic element 41 is the pre-tightening force of the elastic element 41, and the working elastic force of the elastic element 41 is 0.5N-10N, ensuring that the first insert 102 and the second insert 112 maintain stable contact in the free floating state and avoid signal jitter.

[0090] like Figure 1 and Figure 2 As shown, when the fiber optic adapter 100 is not connected to the second connector 11, a dust cap 8 is also provided on the fiber optic adapter 100 to prevent dust and other debris from entering. Specifically, the outer periphery of the dust cap 8 is provided with an external thread that matches the first internal thread 34 inside the housing 3, for threading the dust cap 8 to the housing 3. The dust cap 8 is connected to a connecting ring 71 via a connecting rope 7. The outer periphery of the housing 3 is provided with an annular groove for accommodating the connecting ring 71, and the connecting ring 71 is fitted into the annular groove to prevent the dust cap 8 from falling off. A sealing ring 9 is fitted on the dust cap 8 to further seal the end of the housing 3.

[0091] Example 2

[0092] The difference from Embodiment 1 is that in this embodiment, the accommodating space 38 is disposed on the inner core 5 to accommodate part and / or all of the elastic elements 41, and the accommodating space 38 is provided with a first abutting part 39 that abuts against one end of the elastic element 41. Specifically, taking the elastic element 41 as a spring as an example, one or more first protrusions can be provided on the outer wall of the inner core 5. A circular blind hole for accommodating the spring is opened on the side of the first protrusion facing the small-sized end 31 of the outer shell 3. The circular blind hole is the accommodating space 38, and the inner bottom wall of the circular blind hole is the first abutting part 39.

[0093] The outer casing 3 has a second abutment portion 51 that abuts against the other end of the elastic element 41. Specifically, one or more second protrusions can be provided on the inner wall of the outer casing 3. A groove is provided on the second protrusion for the first protrusion to slide. The extension direction of the groove is parallel to the sliding direction of the inner core 5. One end of the groove is open and the other end is closed, and the closed end is the second abutment portion 51. The extension and contraction direction of the elastic element 41 is parallel to the axial direction of the first channel 33.

[0094] A first chamfer 310 is provided at the port of the accommodating space 38 away from the first abutment portion 39. The first chamfer 310 is used to assist in the introduction of the elastic element. A limit limiting portion 314 is provided on the housing 3. The second abutment portion 51 is configured to limit the sliding of the first boss in the first channel 33 to a limit position. The limit position is the position where the limit limiting portion 314 and the second abutment portion 51 abut against each other.

[0095] Example 3

[0096] The difference from Embodiment 1 is that in this embodiment, the second abutment portion 51 and the anti-detachment portion 52 on the inner core 5 are integrated into a single solid component. This solid component is used to limit the sliding trajectory of the inner core 5 at both ends in the first channel 33. The second abutment portion 51 of the inner core 5 abuts against the initial limiting portion 315 in the initial position and abuts against the extreme limiting portion 314 in the extreme position.

[0097] The inner core 5 can slide between the initial position and the limit position. When the inner core 5 moves towards the large size end 32 to the initial position of the sliding stroke, the second abutting part 51 abuts against the initial limiting part 315 to prevent the inner core 5 from coming out. When the inner core 5 moves away from the initial position towards the small size end 31 to the limit position of the sliding stroke, the second abutting part 51 abuts against the limit limiting part 314 to limit the movement of the inner core 5.

[0098] In this way, the inner core 5 can slide between the initial position and the limit position, adapting to the different distances from the end face of the ferrule to the locking contact surface of the nut in compatible Optitap connectors from various manufacturers. Furthermore, compared to Embodiment 1, this embodiment integrates the second abutment portion 51 and the anti-detachment portion 52 into a single solid component, resulting in fewer components.

[0099] Specifically, the above-mentioned physical components are one or more third protrusions provided on the outer wall of the inner core 5. The side of the third protrusion facing the small-sized end 31 of the outer shell 3 is the third abutment, and the side of the third protrusion away from the small-sized end 31 of the outer shell 3 is the fourth abutment. A fourth protrusion is provided on the inner wall of the outer shell 3, and a sliding groove is provided on the fourth protrusion for the third protrusion to slide. The extension direction of the sliding groove is parallel to the sliding direction of the inner core 5.

[0100] Both ends of the slide groove are closed along its length. One closed end near the smaller end 31 of the outer casing 3 is provided with a receiving space 38 for accommodating part or all of the elastic element 41. The other closed end of the slide groove is provided with an initial limiting part 315. The initial limiting part 315 is configured to limit the initial position of the third boss sliding within the slide groove. The initial position is the position where the fourth abutting part and the initial limiting part 315 abut against each other.

[0101] The accommodating space 38 has a fifth abutting portion that abuts against one end of the elastic element 41, and the other end of the elastic element 41 abuts against the third abutting portion of the third boss. Furthermore, a limit limiting portion 314 is provided in the middle section of the slide groove along the sliding trajectory of the third boss. The limit limiting portion 314 is configured to restrict the third boss from sliding within the slide groove to a limit position, which is the position where the third abutting portion and the limit limiting portion 314 abut against each other.

[0102] Example 4

[0103] The difference from Embodiment 1 is that in this embodiment, the sliding drive mechanism 4 is a magnetic element, including a first magnet and a second magnet, both of which are permanent magnets. The first magnet is disposed inside the first channel 33 of the outer shell 3, and the second magnet is disposed on the inner core 5. The first magnetic pole of the first magnet and the second magnetic pole of the second magnet are arranged opposite to each other, and the first and second magnetic poles have the same polarity. One or more first magnets can be provided, and the number of second magnets is the same as the number of first magnets; the first magnets and the corresponding second magnets repel each other in the direction parallel to the axial direction of the first channel 33.

[0104] Unlike Embodiment 1, where the elasticity of the elastic element 41 provides the tendency for the inner core 5 to slide away from the small-sized end 31 and the pre-tightening force after the first insert 102 and the second insert 112 are connected, in this embodiment, the tendency for the inner core 5 to slide away from the small-sized end 31 and the pre-tightening force after the first insert 102 and the second insert 112 are both provided by the repulsive force between the first magnet and the second magnet.

[0105] The above embodiments are merely illustrative examples of the technical solution of this utility model. The methods involved in this utility model are not limited to those described in the above embodiments, but are subject to the scope defined by the claims. Any modifications, additions, or equivalent substitutions made by those skilled in the art based on these embodiments are within the scope of protection claimed by the claims of this utility model.

Claims

1. An optical fiber adapter, characterized in that, include: The housing (3) includes a large end (32) and a small end (31) opposite to the large end (32), the large end (32) being configured to be detachably connected to a second connector (11), and the housing (3) having a first channel (33) inside. The inner core (5) slides against the first channel (33) of the outer shell (3). The inner core (5) has a second channel (53) inside. The second channel (53) is a signal connection channel between the second connector (11) and the first connector (10). The inner core (5) is configured to be detachably connected to the first connector (10). One or more sliding drive mechanisms (4) have a tendency to drive the inner core (5) to slide away from the smaller end (31).

2. The fiber optic adapter according to claim 1, characterized in that: The outer casing (3) includes at least one of the following: A first internal thread (34) is provided inside the large-size end (32), and the first internal thread (34) is configured to be threadedly connected to the second external thread of the housing of the second connector (11); The first external thread (37) is located outside the small-sized end (31), and the fiber optic adapter is fixed to the housing through the first external thread (37).

3. The fiber optic adapter according to claim 1 or 2, characterized in that: The sliding drive mechanism (4) is of type one or type two, wherein, When the sliding drive mechanism (4) is of type one, the sliding drive mechanism (4) includes an elastic element (41), the inner shell (3) is provided with a first abutting part (39), and the inner core (5) has a second abutting part (51); one end of the elastic element (41) abuts against the first abutting part (39) of the outer shell (3), and the other end abuts against the second abutting part (51) of the inner core (5); the extension and retraction direction of the elastic element (41) is parallel to the axial direction of the first channel (33); When the sliding drive mechanism (4) is of type two, the sliding drive mechanism (4) is a magnetic element, the magnetic element includes a first magnet and a second magnet, the first magnet is disposed inside the outer shell (3), the second magnet is disposed on the inner core (5), the first magnetic pole on the first magnet and the second magnetic pole on the second magnet are disposed opposite to each other, the first magnetic pole and the second magnetic pole have the same polarity, and the first magnetic pole and the second magnetic pole repel each other in the direction parallel to the axial direction of the first channel (33).

4. The fiber optic adapter according to claim 3, characterized in that: The outer shell (3) is provided with a limiting structure in the first channel (33) to limit the sliding stroke of the inner core (5). The limiting structure includes an initial limiting part (315) located at the initial position of the sliding stroke and an extreme limiting part (314) located at the extreme position of the sliding stroke.

5. The fiber optic adapter according to claim 4, characterized in that: The second abutting part (51) of the inner core (5) abuts against the initial limiting part (315) in the initial position and against the limit limiting part (314) in the extreme position.

6. The fiber optic adapter according to claim 4, characterized in that: An initial limiting part (315) is provided in the first channel (33) of the outer shell (3), and an anti-detachment part (52) is provided on the inner core (5). The initial limiting part (315) is configured to restrict the anti-detachment part (52) from sliding in the first channel (33) at an initial position. The initial position is the position where the initial limiting part (315) and the anti-detachment part (52) abut against each other. The outer shell (3) has a limit limiting part (314) in the first channel (33). The limit limiting part (314) is configured to limit the second abutment part (51) of the inner core (5) from compressing the elastic element (41) under the action of external force and thus sliding in the first channel (33) to the limit position. The limit position is the position where the limit limiting part (314) and the second abutment part (51) abut against each other.

7. The fiber optic adapter according to claim 6, characterized in that: The first channel (33) is provided with a first sliding groove (313), the initial limiting part (315) is provided in the first sliding groove (313), the channel of the first sliding groove (313) extends at least from the initial limiting part (315) to the small size end (31), and the anti-detachment part (52) is slidably connected to the first sliding groove (313).

8. The fiber optic adapter according to claim 3, characterized in that: Either or both of the first abutment portion (39) of the outer shell (3) and the second abutment portion (51) of the inner core (5) have a receiving space (38), and the elastic element (41) is partially and / or entirely received in the receiving space (38); and / or, A guide post is provided on either or both of the first abutment portion (39) of the outer shell (3) and / or the second abutment portion (51) of the inner core (5), and the elastic element (41) partially and / or entirely penetrates the guide post.

9. The fiber optic adapter according to claim 8, characterized in that: The accommodating space (38) has a first chamfer (310) at the port of the first abutment (39) away from the outer shell (3), and the first chamfer (310) is used to assist in the introduction of the elastic element (41).

10. The fiber optic adapter according to claim 9, characterized in that: The port of the first chamfer (310) extends circumferentially along the first channel (33) to form the limit stop (314).

11. The fiber optic adapter according to claim 6, characterized in that: A second sliding groove (311) is provided in the first channel (33) or on the inner core (5). The limit limiting part (314) is located at one end of the channel of the second sliding groove (311). The channel of the second sliding groove (311) extends from the limit limiting part (314) to the large size end (32). The second abutting part (51) of the inner core (5) is slidably connected to the second sliding groove (311).

12. The fiber optic adapter according to claim 11, characterized in that: The second sliding groove (311) has a second chamfer (312) at one end away from the limit limiting part (314), and the second chamfer (312) is used to assist in the introduction of the inner core (5).

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